It can be anything! An apex, subdomain, or even a URL.

Results for*.uselessunk.com

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2020-09-14T05:34:53.532	2020-09-14T04:34:52	2020-12-13T04:34:52	realestatecowra.com.au	*.uselessunk.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-09-14T05:34:53.532	2020-09-14T04:34:52	2020-12-13T04:34:52	realestatecowra.com.au	*.uselessunk.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-09-14T05:34:53.127	2020-09-14T04:34:52	2020-12-13T04:34:52	realestatecowra.com.au	*.uselessunk.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-09-14T05:34:53.127	2020-09-14T04:34:52	2020-12-13T04:34:52	realestatecowra.com.au	*.uselessunk.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-06-12T02:12:36.881	2020-06-12T01:12:36	2020-09-10T01:12:36	uselessunk.com	*.uselessunk.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-06-12T02:12:36.881	2020-06-12T01:12:36	2020-09-10T01:12:36	uselessunk.com	*.uselessunk.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-06-12T02:12:36.763	2020-06-12T01:12:36	2020-09-10T01:12:36	uselessunk.com	*.uselessunk.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3
2020-06-12T02:12:36.763	2020-06-12T01:12:36	2020-09-10T01:12:36	uselessunk.com	*.uselessunk.com	C=US, O=Let's Encrypt, CN=Let's Encrypt Authority X3